def func(self, max_tracks, tracks, ret_tracks):
	results = []

	if len(tracks) > 0:
		sorted_files = [track.filename for track in sorted(tracks, key = lambda t: t.added) if len(track.played) == 0]

		results = self.load_tracks(sorted_files, max_tracks)

	ret_tracks |= set(results)

	self.stats_added_days(results, asc = False)
